enhance: add context to Workers

[plyr4]

continuing the efforts started in #898 #922 #923 #930 #937 #938

this is prep to add support for OpenTelemetry tracing.

the reason being, otel can (for the most part) work out of the box if you pass around contexts properly.

[codecov]

Codecov Report

Merging #940 (5178bf9) into main (a3912ea) will increase coverage by 0.01%.
The diff coverage is 88.00%.

@@            Coverage Diff             @@
##             main     #940      +/-   ##
==========================================
+ Coverage   70.88%   70.89%   +0.01%     
==========================================
  Files         311      311              
  Lines       12871    12881      +10     
==========================================
+ Hits         9123     9132       +9     
- Misses       3283     3284       +1     
  Partials      465      465              

Files Changed	Coverage Δ
api/build/cancel.go	0.00% <0.00%> (ø)
router/middleware/executors/executors.go	2.53% <0.00%> (-0.04%)	⬇️
database/resource.go	71.30% <100.00%> (+0.25%)	⬆️
database/worker/count.go	100.00% <100.00%> (ø)
database/worker/create.go	85.00% <100.00%> (ø)
database/worker/delete.go	100.00% <100.00%> (ø)
database/worker/get.go	81.25% <100.00%> (ø)
database/worker/get_hostname.go	83.33% <100.00%> (ø)
database/worker/index.go	100.00% <100.00%> (ø)
database/worker/list.go	72.72% <100.00%> (ø)
... and 5 more

conflicts

[KellyMerrick]

lgtm